1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2013 Gerhard Sittig <gsi@denx.de>
4 * based on the U-Boot Asix driver as well as information
5 * from the Linux Moschip driver
9 * MOSCHIP MCS7830 based (7730/7830/7832) USB 2.0 Ethernet Devices
17 #include <linux/mii.h>
22 #include "usb_ether.h"
24 #define MCS7830_BASE_NAME "mcs"
26 #define USBCALL_TIMEOUT 1000
27 #define LINKSTATUS_TIMEOUT 5000 /* link status, connect timeout */
28 #define LINKSTATUS_TIMEOUT_RES 50 /* link status, resolution in msec */
30 #define MCS7830_RX_URB_SIZE 2048
33 #define MCS7830_WR_BREQ 0x0d
34 #define MCS7830_RD_BREQ 0x0e
36 /* register layout, numerical offset specs for USB API calls */
38 uint8_t multicast_hashes[8];
39 uint8_t packet_gap[2];
41 uint8_t phy_command[2];
42 uint8_t configuration;
43 uint8_t ether_address[6];
44 uint8_t frame_drop_count;
45 uint8_t pause_threshold;
47 #define REG_MULTICAST_HASH offsetof(struct mcs7830_regs, multicast_hashes)
48 #define REG_PHY_DATA offsetof(struct mcs7830_regs, phy_data)
49 #define REG_PHY_CMD offsetof(struct mcs7830_regs, phy_command)
50 #define REG_CONFIG offsetof(struct mcs7830_regs, configuration)
51 #define REG_ETHER_ADDR offsetof(struct mcs7830_regs, ether_address)
52 #define REG_FRAME_DROP_COUNTER offsetof(struct mcs7830_regs, frame_drop_count)
53 #define REG_PAUSE_THRESHOLD offsetof(struct mcs7830_regs, pause_threshold)
55 /* bit masks and default values for the above registers */
56 #define PHY_CMD1_READ 0x40
57 #define PHY_CMD1_WRITE 0x20
58 #define PHY_CMD1_PHYADDR 0x01
60 #define PHY_CMD2_PEND 0x80
61 #define PHY_CMD2_READY 0x40
64 #define CONF_SPEED100 0x40
65 #define CONF_FDX_ENABLE 0x20
66 #define CONF_RXENABLE 0x10
67 #define CONF_TXENABLE 0x08
68 #define CONF_SLEEPMODE 0x04
69 #define CONF_ALLMULTICAST 0x02
70 #define CONF_PROMISCUOUS 0x01
72 #define PAUSE_THRESHOLD_DEFAULT 0
74 /* bit masks for the status byte which follows received ethernet frames */
75 #define STAT_RX_FRAME_CORRECT 0x20
76 #define STAT_RX_LARGE_FRAME 0x10
77 #define STAT_RX_CRC_ERROR 0x08
78 #define STAT_RX_ALIGNMENT_ERROR 0x04
79 #define STAT_RX_LENGTH_ERROR 0x02
80 #define STAT_RX_SHORT_FRAME 0x01
83 * struct mcs7830_private - private driver data for an individual adapter
84 * @config: shadow for the network adapter's configuration register
85 * @mchash: shadow for the network adapter's multicast hash registers
87 struct mcs7830_private {
89 uint8_t rx_buf[MCS7830_RX_URB_SIZE];
90 struct ueth_data ueth;
97 * mcs7830_read_reg() - read a register of the network adapter
98 * @udev: network device to read from
99 * @idx: index of the register to start reading from
100 * @size: number of bytes to read
101 * @data: buffer to read into
102 * Return: zero upon success, negative upon error
104 static int mcs7830_read_reg(struct usb_device *udev, uint8_t idx,
105 uint16_t size, void *data)
108 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size);
110 debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size);
112 len = usb_control_msg(udev,
113 usb_rcvctrlpipe(udev, 0),
115 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
119 debug("%s() len=%d != sz=%d\n", __func__, len, size);
122 memcpy(data, buf, size);
127 * mcs7830_write_reg() - write a register of the network adapter
128 * @udev: network device to write to
129 * @idx: index of the register to start writing to
130 * @size: number of bytes to write
131 * @data: buffer holding the data to write
132 * Return: zero upon success, negative upon error
134 static int mcs7830_write_reg(struct usb_device *udev, uint8_t idx,
135 uint16_t size, void *data)
138 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, size);
140 debug("%s() idx=0x%04X sz=%d\n", __func__, idx, size);
142 memcpy(buf, data, size);
143 len = usb_control_msg(udev,
144 usb_sndctrlpipe(udev, 0),
146 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
150 debug("%s() len=%d != sz=%d\n", __func__, len, size);
157 * mcs7830_phy_emit_wait() - emit PHY read/write access, wait for its execution
158 * @udev: network device to talk to
159 * @rwflag: PHY_CMD1_READ or PHY_CMD1_WRITE opcode
160 * @index: number of the PHY register to read or write
161 * Return: zero upon success, negative upon error
163 static int mcs7830_phy_emit_wait(struct usb_device *udev,
164 uint8_t rwflag, uint8_t index)
170 /* send the PHY read/write request */
171 cmd[0] = rwflag | PHY_CMD1_PHYADDR;
172 cmd[1] = PHY_CMD2_PEND | (index & 0x1f);
173 rc = mcs7830_write_reg(udev, REG_PHY_CMD, sizeof(cmd), cmd);
177 /* wait for the response to become available (usually < 1ms) */
180 rc = mcs7830_read_reg(udev, REG_PHY_CMD, sizeof(cmd), cmd);
183 if (cmd[1] & PHY_CMD2_READY)
193 * mcs7830_read_phy() - read a PHY register of the network adapter
194 * @udev: network device to read from
195 * @index: index of the PHY register to read from
196 * Return: non-negative 16bit register content, negative upon error
198 static int mcs7830_read_phy(struct usb_device *udev, uint8_t index)
203 /* issue the PHY read request and wait for its execution */
204 rc = mcs7830_phy_emit_wait(udev, PHY_CMD1_READ, index);
208 /* fetch the PHY data which was read */
209 rc = mcs7830_read_reg(udev, REG_PHY_DATA, sizeof(val), &val);
212 rc = le16_to_cpu(val);
213 debug("%s(%d) => 0x%04X\n", __func__, index, rc);
218 * mcs7830_write_phy() - write a PHY register of the network adapter
219 * @udev: network device to write to
220 * @index: index of the PHY register to write to
221 * @val: value to write to the PHY register
222 * Return: zero upon success, negative upon error
224 static int mcs7830_write_phy(struct usb_device *udev, uint8_t index,
229 debug("%s(%d, 0x%04X)\n", __func__, index, val);
231 /* setup the PHY data which is to get written */
232 val = cpu_to_le16(val);
233 rc = mcs7830_write_reg(udev, REG_PHY_DATA, sizeof(val), &val);
237 /* issue the PHY write request and wait for its execution */
238 rc = mcs7830_phy_emit_wait(udev, PHY_CMD1_WRITE, index);
246 * mcs7830_write_config() - write to the network adapter's config register
247 * @udev: network device to write to
248 * @priv: private data
249 * Return: zero upon success, negative upon error
251 * the data which gets written is taken from the shadow config register
252 * within the device driver's private data
254 static int mcs7830_write_config(struct usb_device *udev,
255 struct mcs7830_private *priv)
259 debug("%s()\n", __func__);
261 rc = mcs7830_write_reg(udev, REG_CONFIG,
262 sizeof(priv->config), &priv->config);
264 debug("writing config to adapter failed\n");
272 * mcs7830_write_mchash() - write the network adapter's multicast filter
273 * @udev: network device to write to
274 * @priv: private data
275 * Return: zero upon success, negative upon error
277 * the data which gets written is taken from the shadow multicast hashes
278 * within the device driver's private data
280 static int mcs7830_write_mchash(struct usb_device *udev,
281 struct mcs7830_private *priv)
285 debug("%s()\n", __func__);
287 rc = mcs7830_write_reg(udev, REG_MULTICAST_HASH,
288 sizeof(priv->mchash), &priv->mchash);
290 debug("writing multicast hash to adapter failed\n");
298 * mcs7830_set_autoneg() - setup and trigger ethernet link autonegotiation
299 * @udev: network device to run link negotiation on
300 * Return: zero upon success, negative upon error
302 * the routine advertises available media and starts autonegotiation
304 static int mcs7830_set_autoneg(struct usb_device *udev)
309 debug("%s()\n", __func__);
312 * algorithm taken from the Linux driver, which took it from
313 * "the original mcs7830 version 1.4 driver":
315 * enable all media, reset BMCR, enable auto neg, restart
316 * auto neg while keeping the enable auto neg flag set
319 adv = ADVERTISE_PAUSE_CAP | ADVERTISE_ALL | ADVERTISE_CSMA;
320 rc = mcs7830_write_phy(udev, MII_ADVERTISE, adv);
324 rc = mcs7830_write_phy(udev, MII_BMCR, flg);
326 flg |= BMCR_ANENABLE;
328 rc = mcs7830_write_phy(udev, MII_BMCR, flg);
330 flg |= BMCR_ANRESTART;
332 rc = mcs7830_write_phy(udev, MII_BMCR, flg);
338 * mcs7830_get_rev() - identify a network adapter's chip revision
339 * @udev: network device to identify
340 * Return: non-negative number, reflecting the revision number
342 * currently, only "rev C and higher" and "below rev C" are needed, so
343 * the return value is #1 for "below rev C", and #2 for "rev C and above"
345 static int mcs7830_get_rev(struct usb_device *udev)
351 /* register 22 is readable in rev C and higher */
352 rc = mcs7830_read_reg(udev, REG_FRAME_DROP_COUNTER, sizeof(buf), buf);
357 debug("%s() rc=%d, rev=%d\n", __func__, rc, rev);
362 * mcs7830_apply_fixup() - identify an adapter and potentially apply fixups
363 * @udev: network device to identify and apply fixups to
364 * Return: zero upon success (no errors emitted from here)
366 * this routine identifies the network adapter's chip revision, and applies
367 * fixups for known issues
369 static int mcs7830_apply_fixup(struct usb_device *udev)
375 rev = mcs7830_get_rev(udev);
376 debug("%s() rev=%d\n", __func__, rev);
379 * rev C requires setting the pause threshold (the Linux driver
380 * is inconsistent, the implementation does it for "rev C
381 * exactly", the introductory comment says "rev C and above")
384 debug("%s: applying rev C fixup\n", __func__);
385 thr = PAUSE_THRESHOLD_DEFAULT;
386 for (i = 0; i < 2; i++) {
387 (void)mcs7830_write_reg(udev, REG_PAUSE_THRESHOLD,
397 * mcs7830_basic_reset() - bring the network adapter into a known first state
398 * @eth: network device to act upon
399 * Return: zero upon success, negative upon error
401 * this routine initializes the network adapter such that subsequent invocations
402 * of the interface callbacks can exchange ethernet frames; link negotiation is
403 * triggered from here already and continues in background
405 static int mcs7830_basic_reset(struct usb_device *udev,
406 struct mcs7830_private *priv)
410 debug("%s()\n", __func__);
413 * comment from the respective Linux driver, which
414 * unconditionally sets the ALLMULTICAST flag as well:
415 * should not be needed, but does not work otherwise
417 priv->config = CONF_TXENABLE;
418 priv->config |= CONF_ALLMULTICAST;
420 rc = mcs7830_set_autoneg(udev);
422 pr_err("setting autoneg failed\n");
426 rc = mcs7830_write_mchash(udev, priv);
428 pr_err("failed to set multicast hash\n");
432 rc = mcs7830_write_config(udev, priv);
434 pr_err("failed to set configuration\n");
438 rc = mcs7830_apply_fixup(udev);
440 pr_err("fixup application failed\n");
448 * mcs7830_read_mac() - read an ethernet adapter's MAC address
449 * @udev: network device to read from
450 * @enetaddr: place to put ethernet MAC address
451 * Return: zero upon success, negative upon error
453 * this routine fetches the MAC address stored within the ethernet adapter,
454 * and stores it in the ethernet interface's data structure
456 static int mcs7830_read_mac(struct usb_device *udev, unsigned char enetaddr[])
459 uint8_t buf[ETH_ALEN];
461 debug("%s()\n", __func__);
463 rc = mcs7830_read_reg(udev, REG_ETHER_ADDR, ETH_ALEN, buf);
465 debug("reading MAC from adapter failed\n");
469 memcpy(enetaddr, buf, ETH_ALEN);
473 static int mcs7830_write_mac_common(struct usb_device *udev,
474 unsigned char enetaddr[])
478 debug("%s()\n", __func__);
480 rc = mcs7830_write_reg(udev, REG_ETHER_ADDR, ETH_ALEN, enetaddr);
482 debug("writing MAC to adapter failed\n");
488 static int mcs7830_init_common(struct usb_device *udev)
493 debug("%s()\n", __func__);
497 have_link = mcs7830_read_phy(udev, MII_BMSR) & BMSR_LSTATUS;
500 udelay(LINKSTATUS_TIMEOUT_RES * 1000);
501 timeout += LINKSTATUS_TIMEOUT_RES;
502 } while (timeout < LINKSTATUS_TIMEOUT);
504 debug("ethernet link is down\n");
510 static int mcs7830_send_common(struct ueth_data *ueth, void *packet,
513 struct usb_device *udev = ueth->pusb_dev;
516 /* there is a status byte after the ethernet frame */
517 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, PKTSIZE + sizeof(uint8_t));
519 memcpy(buf, packet, length);
520 rc = usb_bulk_msg(udev,
521 usb_sndbulkpipe(udev, ueth->ep_out),
522 &buf[0], length, &gotlen,
524 debug("%s() TX want len %d, got len %d, rc %d\n",
525 __func__, length, gotlen, rc);
529 static int mcs7830_recv_common(struct ueth_data *ueth, uint8_t *buf)
531 int rc, wantlen, gotlen;
534 debug("%s()\n", __func__);
536 /* fetch input data from the adapter */
537 wantlen = MCS7830_RX_URB_SIZE;
538 rc = usb_bulk_msg(ueth->pusb_dev,
539 usb_rcvbulkpipe(ueth->pusb_dev, ueth->ep_in),
540 &buf[0], wantlen, &gotlen,
542 debug("%s() RX want len %d, got len %d, rc %d\n",
543 __func__, wantlen, gotlen, rc);
545 pr_err("RX: failed to receive\n");
548 if (gotlen > wantlen) {
549 pr_err("RX: got too many bytes (%d)\n", gotlen);
554 * the bulk message that we received from USB contains exactly
555 * one ethernet frame and a trailing status byte
557 if (gotlen < sizeof(sts))
559 gotlen -= sizeof(sts);
562 if (sts == STAT_RX_FRAME_CORRECT) {
563 debug("%s() got a frame, len=%d\n", __func__, gotlen);
567 debug("RX: frame error (sts 0x%02X, %s %s %s %s %s)\n",
569 (sts & STAT_RX_LARGE_FRAME) ? "large" : "-",
570 (sts & STAT_RX_LENGTH_ERROR) ? "length" : "-",
571 (sts & STAT_RX_SHORT_FRAME) ? "short" : "-",
572 (sts & STAT_RX_CRC_ERROR) ? "crc" : "-",
573 (sts & STAT_RX_ALIGNMENT_ERROR) ? "align" : "-");
577 #ifndef CONFIG_DM_ETH
579 * mcs7830_init() - network interface's init callback
580 * @udev: network device to initialize
581 * @bd: board information
582 * Return: zero upon success, negative upon error
584 * after initial setup during probe() and get_info(), this init() callback
585 * ensures that the link is up and subsequent send() and recv() calls can
586 * exchange ethernet frames
588 static int mcs7830_init(struct eth_device *eth, bd_t *bd)
590 struct ueth_data *dev = eth->priv;
592 return mcs7830_init_common(dev->pusb_dev);
596 * mcs7830_send() - network interface's send callback
597 * @eth: network device to send the frame from
598 * @packet: ethernet frame content
599 * @length: ethernet frame length
600 * Return: zero upon success, negative upon error
602 * this routine send an ethernet frame out of the network interface
604 static int mcs7830_send(struct eth_device *eth, void *packet, int length)
606 struct ueth_data *dev = eth->priv;
608 return mcs7830_send_common(dev, packet, length);
612 * mcs7830_recv() - network interface's recv callback
613 * @eth: network device to receive frames from
614 * Return: zero upon success, negative upon error
616 * this routine checks for available ethernet frames that the network
617 * interface might have received, and notifies the network stack
619 static int mcs7830_recv(struct eth_device *eth)
621 ALLOC_CACHE_ALIGN_BUFFER(uint8_t, buf, MCS7830_RX_URB_SIZE);
622 struct ueth_data *ueth = eth->priv;
625 len = mcs7830_recv_common(ueth, buf);
627 net_process_received_packet(buf, len);
635 * mcs7830_halt() - network interface's halt callback
636 * @eth: network device to cease operation of
639 * this routine is supposed to undo the effect of previous initialization and
640 * ethernet frames exchange; in this implementation it's a NOP
642 static void mcs7830_halt(struct eth_device *eth)
644 debug("%s()\n", __func__);
648 * mcs7830_write_mac() - write an ethernet adapter's MAC address
649 * @eth: network device to write to
650 * Return: zero upon success, negative upon error
652 * this routine takes the MAC address from the ethernet interface's data
653 * structure, and writes it into the ethernet adapter such that subsequent
654 * exchange of ethernet frames uses this address
656 static int mcs7830_write_mac(struct eth_device *eth)
658 struct ueth_data *ueth = eth->priv;
660 return mcs7830_write_mac_common(ueth->pusb_dev, eth->enetaddr);
664 * mcs7830_iface_idx - index of detected network interfaces
666 * this counter keeps track of identified supported interfaces,
667 * to assign unique names as more interfaces are found
669 static int mcs7830_iface_idx;
672 * mcs7830_eth_before_probe() - network driver's before_probe callback
675 * this routine initializes driver's internal data in preparation of
676 * subsequent probe callbacks
678 void mcs7830_eth_before_probe(void)
680 mcs7830_iface_idx = 0;
684 * struct mcs7830_dongle - description of a supported Moschip ethernet dongle
685 * @vendor: 16bit USB vendor identification
686 * @product: 16bit USB product identification
688 * this structure describes a supported USB ethernet dongle by means of the
689 * vendor and product codes found during USB enumeration; no flags are held
690 * here since all supported dongles have identical behaviour, and required
691 * fixups get determined at runtime, such that no manual configuration is
694 struct mcs7830_dongle {
700 * mcs7830_dongles - the list of supported Moschip based USB ethernet dongles
702 static const struct mcs7830_dongle mcs7830_dongles[] = {
703 { 0x9710, 0x7832, }, /* Moschip 7832 */
704 { 0x9710, 0x7830, }, /* Moschip 7830 */
705 { 0x9710, 0x7730, }, /* Moschip 7730 */
706 { 0x0df6, 0x0021, }, /* Sitecom LN 30 */
710 * mcs7830_eth_probe() - network driver's probe callback
711 * @dev: detected USB device to check
712 * @ifnum: detected USB interface to check
713 * @ss: USB ethernet data structure to fill in upon match
714 * Return: #1 upon match, #0 upon mismatch or error
716 * this routine checks whether the found USB device is supported by
717 * this ethernet driver, and upon match fills in the USB ethernet
718 * data structure which later is passed to the get_info callback
720 int mcs7830_eth_probe(struct usb_device *dev, unsigned int ifnum,
721 struct ueth_data *ss)
723 struct usb_interface *iface;
724 struct usb_interface_descriptor *iface_desc;
726 struct mcs7830_private *priv;
727 int ep_in_found, ep_out_found, ep_intr_found;
729 debug("%s()\n", __func__);
731 /* iterate the list of supported dongles */
732 iface = &dev->config.if_desc[ifnum];
733 iface_desc = &iface->desc;
734 for (i = 0; i < ARRAY_SIZE(mcs7830_dongles); i++) {
735 if (dev->descriptor.idVendor == mcs7830_dongles[i].vendor &&
736 dev->descriptor.idProduct == mcs7830_dongles[i].product)
739 if (i == ARRAY_SIZE(mcs7830_dongles))
741 debug("detected USB ethernet device: %04X:%04X\n",
742 dev->descriptor.idVendor, dev->descriptor.idProduct);
744 /* fill in driver private data */
745 priv = calloc(1, sizeof(*priv));
749 /* fill in the ueth_data structure, attach private data */
750 memset(ss, 0, sizeof(*ss));
753 ss->subclass = iface_desc->bInterfaceSubClass;
754 ss->protocol = iface_desc->bInterfaceProtocol;
758 * a minimum of three endpoints is expected: in (bulk),
759 * out (bulk), and interrupt; ignore all others
761 ep_in_found = ep_out_found = ep_intr_found = 0;
762 for (i = 0; i < iface_desc->bNumEndpoints; i++) {
763 uint8_t eptype, epaddr;
766 eptype = iface->ep_desc[i].bmAttributes;
767 eptype &= USB_ENDPOINT_XFERTYPE_MASK;
769 epaddr = iface->ep_desc[i].bEndpointAddress;
770 is_input = epaddr & USB_DIR_IN;
771 epaddr &= USB_ENDPOINT_NUMBER_MASK;
773 if (eptype == USB_ENDPOINT_XFER_BULK) {
774 if (is_input && !ep_in_found) {
778 if (!is_input && !ep_out_found) {
784 if (eptype == USB_ENDPOINT_XFER_INT) {
785 if (is_input && !ep_intr_found) {
787 ss->irqinterval = iface->ep_desc[i].bInterval;
792 debug("endpoints: in %d, out %d, intr %d\n",
793 ss->ep_in, ss->ep_out, ss->ep_int);
795 /* apply basic sanity checks */
796 if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
797 !ss->ep_in || !ss->ep_out || !ss->ep_int) {
798 debug("device probe incomplete\n");
807 * mcs7830_eth_get_info() - network driver's get_info callback
808 * @dev: detected USB device
809 * @ss: USB ethernet data structure filled in at probe()
810 * @eth: ethernet interface data structure to fill in
811 * Return: #1 upon success, #0 upon error
813 * this routine registers the mandatory init(), send(), recv(), and
814 * halt() callbacks with the ethernet interface, can register the
815 * optional write_hwaddr() callback with the ethernet interface,
816 * and initiates configuration of the interface such that subsequent
817 * calls to those callbacks results in network communication
819 int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
820 struct eth_device *eth)
822 debug("%s()\n", __func__);
824 debug("%s: missing parameter.\n", __func__);
828 snprintf(eth->name, sizeof(eth->name), "%s%d",
829 MCS7830_BASE_NAME, mcs7830_iface_idx++);
830 eth->init = mcs7830_init;
831 eth->send = mcs7830_send;
832 eth->recv = mcs7830_recv;
833 eth->halt = mcs7830_halt;
834 eth->write_hwaddr = mcs7830_write_mac;
837 if (mcs7830_basic_reset(ss->pusb_dev, ss->dev_priv))
840 if (mcs7830_read_mac(ss->pusb_dev, eth->enetaddr))
842 debug("MAC %pM\n", eth->enetaddr);
850 static int mcs7830_eth_start(struct udevice *dev)
852 struct usb_device *udev = dev_get_parent_priv(dev);
854 return mcs7830_init_common(udev);
857 void mcs7830_eth_stop(struct udevice *dev)
859 debug("** %s()\n", __func__);
862 int mcs7830_eth_send(struct udevice *dev, void *packet, int length)
864 struct mcs7830_private *priv = dev_get_priv(dev);
865 struct ueth_data *ueth = &priv->ueth;
867 return mcs7830_send_common(ueth, packet, length);
870 int mcs7830_eth_recv(struct udevice *dev, int flags, uchar **packetp)
872 struct mcs7830_private *priv = dev_get_priv(dev);
873 struct ueth_data *ueth = &priv->ueth;
876 len = mcs7830_recv_common(ueth, priv->rx_buf);
877 *packetp = priv->rx_buf;
882 static int mcs7830_free_pkt(struct udevice *dev, uchar *packet, int packet_len)
884 struct mcs7830_private *priv = dev_get_priv(dev);
886 packet_len = ALIGN(packet_len, 4);
887 usb_ether_advance_rxbuf(&priv->ueth, sizeof(u32) + packet_len);
892 int mcs7830_write_hwaddr(struct udevice *dev)
894 struct usb_device *udev = dev_get_parent_priv(dev);
895 struct eth_pdata *pdata = dev_get_platdata(dev);
897 return mcs7830_write_mac_common(udev, pdata->enetaddr);
900 static int mcs7830_eth_probe(struct udevice *dev)
902 struct usb_device *udev = dev_get_parent_priv(dev);
903 struct mcs7830_private *priv = dev_get_priv(dev);
904 struct eth_pdata *pdata = dev_get_platdata(dev);
905 struct ueth_data *ueth = &priv->ueth;
907 if (mcs7830_basic_reset(udev, priv))
910 if (mcs7830_read_mac(udev, pdata->enetaddr))
913 return usb_ether_register(dev, ueth, MCS7830_RX_URB_SIZE);
916 static const struct eth_ops mcs7830_eth_ops = {
917 .start = mcs7830_eth_start,
918 .send = mcs7830_eth_send,
919 .recv = mcs7830_eth_recv,
920 .free_pkt = mcs7830_free_pkt,
921 .stop = mcs7830_eth_stop,
922 .write_hwaddr = mcs7830_write_hwaddr,
925 U_BOOT_DRIVER(mcs7830_eth) = {
926 .name = "mcs7830_eth",
928 .probe = mcs7830_eth_probe,
929 .ops = &mcs7830_eth_ops,
930 .priv_auto_alloc_size = sizeof(struct mcs7830_private),
931 .platdata_auto_alloc_size = sizeof(struct eth_pdata),
932 .flags = DM_FLAG_ALLOC_PRIV_DMA,
935 static const struct usb_device_id mcs7830_eth_id_table[] = {
936 { USB_DEVICE(0x9710, 0x7832) }, /* Moschip 7832 */
937 { USB_DEVICE(0x9710, 0x7830), }, /* Moschip 7830 */
938 { USB_DEVICE(0x9710, 0x7730), }, /* Moschip 7730 */
939 { USB_DEVICE(0x0df6, 0x0021), }, /* Sitecom LN 30 */
940 { } /* Terminating entry */
943 U_BOOT_USB_DEVICE(mcs7830_eth, mcs7830_eth_id_table);